Mold for cement tile.



No. 799,559. PATENTED SEPT. 12, 1905. J. GROSCUP.

MOLD FOR CEMENT TILE.

APPLIOATION FILED MAR. 16, 1905.

WITNESS/i5.-

[NVE/VTOR.

w ATTOR/VEi mnnew u. GRWAM cm. nora-umocmwns, wasnmavuu. n r:v

UNITED STATES PATENT OFFICE.

MOLD FOR CEMENT TILE.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Application filed March 16, 1905. $eria1No. 250,375.

T0 on whom, it may concern:

Be it known that I, JOHN GROSGOP, a citizen of the United States,residing at Auburn, in the county of Dekalb, in the State of Indiana,have invented certain new and useful Improvements in Molds for CementTile; and I do hereby declare that the following is a full, clear, andexact description of the invention, which will enable others skilled inthe art to which it appertains to make and use the same, reference beinghad to the accompanyingdrawings, which form part of this specification.

My invention relates to improvements in molds for cement tile.

The object of my present invention is to provide a cheap, simple, andefificient mold for use in the manufacture of cement tile so constructedand arranged as to be conveniently adjustable for the manufacture oftile having different diameters and different thicknesses and also soarranged that the outer casing can be conveniently used as the innercasing of another and larger mold and the inside casing can be used asthe outside casing of a smaller mold of similar construction.

My invention consists of a cement-tile mold formed of an inner and anouter cylindrical casing in concentric relation when in use, the saidtwo-part casing being removably mounted on a proper pallet provided witha series of centering-pins in spaced radial relation, means forincreasing or contracting the diameter of the mold-cylinders and forsecuring them in their adjusted position, and a novel form of funneldetachably mounted upon the open top of the said two-part casing when inconcentric arrangement for use.

Similar referencenumerals indicate like parts in both views of thedrawings, in which Figure 1 is a side elevation of my invention, partlyin central section, showing the relative arrangement of the operativeparts when in position in use. Fig. 2 is a plan of the same with thesurmounted funnel removed and the molds partly in cross-section to showthe.

means for adjusting the mold for different sizes of tile.

The pallet 1 is a board of any desired dimensions or contour providedupon its upper face with a series of removable and radially-arrangedshort upright pins 2, preferably in four rows, as shown, and in measuredarrangement, preferably spaced one inch apart.

The outer casing 3 of the mold consists of a cylindrical casing of anysuitable material,

preferably of light soft steel, to give proper elasticity for itsrequired adjustments and also proper hardness to prevent denting in use,having open ends and lapping edges, as shown. The inner one 4 of thelapping edges has a plurality of angular openings, in which are arrangedangular bolts 5, whose outer projecting end has its edges screw-threadedin a wellunderstood manner and adapted to receive the wing-nut 6 and aninterposed washer 7 The outer lapping edge of the outer casing 3 has aplurality of horizontal slots 8 coincident with the said respectiveboltopenings,whereby the said casing by loosening the nut 6 can beeither enlarged or contracted diametrically to the extent of the lengthof the said slots. The inner cylindrical casing 9 is identical inconstruction and arrangement, except that it is of less diameter, and isprovided upon its inner face, preferably near the middle of its length,with the oppositely-arranged strips 10 andll, the former having one endfixed to the casing near its overlapping edge and the latter fixed nearthe underlapping edge. The adjacent ends of these strips are bent atright angles to form handles, by means of which the contraction of theinner cylinder can readily be efiected to remove the same when theplastic tile has sufficiently hardened to sustain its own weight.

In the inner casing 9, which has the same arrangement of bolt-openingsand slots as the outer casing, the flat head of the bolts 5 are upon itsouter face, and the winged nuts 6 are arranged upon the inner face ofthe casing to make them accessible to the operator when it is desired torelease the inner casing and remlove the mold from the inclosed andfinished ti e.'

The funnel, which is removably mounted upon my two-part casing and formsa cooperative part of the mold, consists of two cylindrical sections insubstantially concentric arrangement rigidly connected by a plurality ofradial webs or connecting plates or pieces 12, fixed at each end to therespective sections.' The outer of these funnel-sections 13 is outwardlyflaring, and the inner section 14 is upwardly contracted, therebyleaving a suitable annular space between them to receive the wet,plastic, and semisolid cement and direct the same downward into theannular space between the mold-casings 3 and 9. This funnel preferablyhas the lower edge of its outer rim 13 provided with a pendent annularflange 15, adapted to snugly fit within the upper edge of themold-casing 3, and the inner rim 14 has a pendent flange 16, adapted tosnugly Having thus described my invention and the manner of employingthe same; what I desire to secure by Letters Patent is 1. In atile-forming mold or apparatus, an inner and outer upright cylindricalcasing in concentric relation with an interposed annular chamber, thesaid casings being open at both ends; the outer lapping edge of theouter casing having a plurality of slots coincident with bolt-openingsin the inner edge adapted to receive securing-bolts by which thecylinder can be expanded or contracted diametrically; a supporting-basefor the said mold having a series of radially-arranged removablecentering pins, and a funnel rernovably mounted upon said casingsconsisting of two concentric sections oppositely flaring and rigidlyconnected as described.

2. A tile-forming mold, consisting of two upright open-ended cylindricalcasings apertured and slotted as described to admit of their expansionor contraction; the inner casing having the oppositely-arranged strips10 and 11 constructed as described and adapted with bolts to secure thelapping edges of said inner casing in an expanded or contractedcondition; a supporting-base provided with a series .otl radiallyarranged removable centeringpins for securing said casings in theirconcentric relation against lateral displacement; and a removable funnelfor the upper ends of said casings adapted to guide the semisolidmaterial into the tile-forming chambers.

3. The combination in a tile-mold of cylinders adapted to bediametrically expanded or contracted; means for securing the saidcylinders in such adjusted relation, constructed as described; asupporting-base provided upon its face with radially-arranged holes toreceive removable pins for supporting the two-part casing againstlateral displacement by the pressure of the tile during the formation;removable pins adapted for insertion in the holes in said base, and atwo-flanged funnel flaring as described, removably mounted upon saidcasings as shown.

Signed by me at Fort Wayne, county of Allen, State of Indiana,this 13thday of March, A. D. 1905.

JOHN GROSCOP.

